Browsing by Author "201-0010752"
Now showing items 41-60 of 70
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(MARCEL DEKKER INC, 2003)Treatment of formylchromones, dissolved in 2-propanol with basic alumina at 75degreesC, selectively reduces the formyl group with good yields without any activation process of the alumina.
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(AMER CHEMICAL SOC, 2005-12-28)The effect on mycelial growth of the fungus Botrytis cinerea of a set of structurally related tricyclic hydroquinones [9,10-dihydroxy-4,4-dimethyl-2,3,5,8-tetrahydroantracen-1(4H)-one and 9,10-dihydroxy-4,4-dimethyl-5,8- ...
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(MDPI, 2014)Intramolecular hydrogen bonds (IHBs) play a central role in the molecular structure, chemical reactivity and interactions of biologically active molecules. Here, we study the IHBs of seven related o-carbonyl hydroquinones ...
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(SOC BRASILEIRA QUIMICA, 2005-05)A systematic study about the long-range correlations observed in the HMBC spectra of a series of cis and trans 3-(4-oxo-4H-chromen-3-yl)-acrylic acid ethyl esters, and 5-hydroxy derivatives, was carried out. The results ...
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(Wiley, 2018)One of the most useful applications of silver colloidal solutions is in surface-enhanced Raman spectroscopy (SERS), because the amplification factor of about 10(6) allows the vibrational study and detection of highly diluted ...
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On the reduction of 4-oxo-4H-benzopyran-3-carbaldehydes: Global and local electrophilicity patternse (SOCIEDAD CHILENA DE QUIMICA, 2004-03)The theoretical global and local electrophilicity patterns of substituted and chelated 4-oxo-4H-benzopyran-3-carbaldehydes (formylchromones) have been evaluated using the electrophilicity index proposed by Parr et al [J. ...
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(Elsevier, 2013)Tumor cells present a known metabolic reprogramming, which makes them more susceptible for a selective cellular death by modifying its mitochondrial bioenergetics. Anticancer action of the antioxidant 9,10- dihydroxy-4 ...
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(MDPI AG, 2016)A series of a new type of tetracyclic carbazolequinones incorporating a carbonyl group at the ortho position relative to the quinone moiety was synthesized and analyzed by tandem electrospray ionization mass spectrometry ...
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(Universidad de Chile, 2013-09)En esta tesis doctoral se estudió, en forma experimental y teórica, la reacción de acoplamiento oxidativo de las quinonas carbo- y heterocíclicas 2-metil-1,4-benzoquinona, 8,8-dimetilnaftalen-l,4,5(8H)-triona y el éster ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 1999-01-15)The Diels-Alder reactions of 8,8-dimethylnaphtalene-1,4,5(8H)-trione with 2,4-hexadien-1-ol and its O-acetyl derivative were investigated in different solvents. The regiochemistry of the cycloaddition of the hexadienol was ...
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(Elsevier, 2013)Diels–Alder cycloaddition of 8,8-dimethylnaphthalene-1,4,5(8H)-trione with diastereomeric hydroxysulfinyldienes proceeded with high yields and good p-facial and regioselectivities. The hydroxysulfoxide moiety controls ...
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(Universidad de Chile, 2014)En este trabajo se informa la síntesis y caracterización de una serie de acilhidroquinonas lipofílicas, portadoras de un átomo de bromo o del catión trifenilfosfonio en el fragmento acílico, características que permiten ...
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(Universidad de ChileCyberDocs, 2011)Se sintetizó una serie de hidroquinonas tricíclicas, mediante reacciones Diels-Alder de quinonas bicíclicas con distintos dienos. Posteriormente, algunas de las hidroquinonas tricíclicas fueron oxidadas a las correspondientes ...
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(Academic Press Elsevier Science, 2016)Mitochondria participate in several distinctiveness of cancer cell, being a promising target for the design of anti-cancer compounds. Previously, we described that ortho-carbonyl hydroquinone scaffold 14 inhibits the complex ...
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(ARKAT USA INC, 2009)A series of Michael adducts (5-11) have been synthesized with good yields under solvent-free microwave conditions. Aliphatic and aromatic amines utilized as Michael donors reacted with 1-(4,7-dimethoxybenzo[b] thiophen-2 ...
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(GEORG THIEME VERLAG KG, 2004-02-18)The syntheses of 2-(2-nitrophenyl)-1-benzoyl-1H-benzimidazole derivatives 5-9 and their reduction to the corresponding 2-benzimidazoylbenzamides 10-13 are described. Compounds 10-13 were cleanly and efficiently converted ...
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(2011)The synthesis of a series of functionalized 1-Benzyl-3-[4-Aryl-1-piperazingl]carbonyl-1H-Indoles 6(a-f), as a potential new class of bioactive ligands at D4 receptors is reported. The synthetic strategy took place through ...
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(TAYLOR & FRANCIS INC, 2007)A novel series of 2-benzothienyl carbonyl arylpiperazines (6a-f) was synthesized as potential HIV nonnucleoside reverse transcriptase inhibitors (NNRTIs). Preparation of the derivatives was performed by reacting benzo[b]thiophene ...
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(Elsevier, 2020)Cardiovascular diseases are the leading cause of death in the world. Platelets have a major role in cardiovascular events as they bind to the damaged endothelium activating and forming thrombi. Although some hydroquinone ...
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(TAYLOR & FRANCIS INC, 2007)New benzothiophene arylpiperazine derivatives 8 (a-f) were synthesized as potential serotoninergic agents with 5-HT1A receptor affinity. Preparation of the derivatives was performed by treating N-[2-(chloromethyl)phenyl] ...
